Active Sonar - GeoSpectrum Technologies Inc https://geospectrum.ca/product-tag/active-sonar/ Specialists in underwater acoustic transducers and systems Wed, 26 Aug 2026 12:18:26 +0000 en-US hourly 1 https://wordpress.org/?v=7.1.4 Jaeger USV https://geospectrum.ca/product/jaeger-usv/ Thu, 04 Dec 2025 19:37:27 +0000 https://geospectrum.ca/?post_type=product&p=10909 The only vessel of its kind that integrates all oper­ational modes on one platform. Featuring modular and switchable mission payload suites with advanced sonars and subsystems, the fully autonomous Jaeger USV can be deployed for multiple crewed and un­crewed missions. The Jaeger USV incorporates mine counter measures (MCM), anti-submarine warfare (ASW), maritime security (MS), electronic warfare (EW) and other advanced systems and technologies. Jaeger USV can operate at cruising speed for more than 4 full days at sea and is equipped to perform extensive missions.

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Material
Aluminum, Composite
Length
12 – 20 m
Draft
0.8 m
Beam
3.3 m
Useful Payload
2,500 – 10,500 kg
Propulsion
Propellers and Thrusters
Diesel Engines
2 x 425 hp (Cummins)
Top Speed & Endurance
25 kt, > 4 – 8 days
Features
  • Advanced sonar technologies and systems
  • Line-of-site and SATCOM data links
  • Modular payloads
  • Mission control system

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]]> Auk Dipping Sonar https://geospectrum.ca/product/auk-dipping-sonar/ Thu, 06 Jun 2024 11:51:31 +0000 https://geospectrum.ca/?post_type=product&p=8572 Auk is a high power, low frequency dipping sonar system purpose-built by GTI specifically for operating from small to large unmanned surface vessels (USVs). Auk is designed for littoral operations and deep water as part of a multistatic system for defence and surveillance.

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The system provides leading edge sonar performance that rivals the best helicopter dipping sonars on the market, fully integrated unmanned operation capability, and rugged construction for reliable operation and simple maintenance in the marine environment.

Advantages over Adapted helicopter dipping sonars due to USV-dedicated design:

  • Capable of sustained acoustic transmissions at both high power and high duty cycle (no need to wait and re-charge a power bank in the SU).
  • System is designed specifically for an extended lifetime operating in the harsh marine environment:
    • Equipment is designed for naval shipboard shock and vibration.
    • On-deck components and materials are selected to withstand the elements, water loading, and corrosion of a small vessel’s open deck environment at sea.
  • Simplified interfaces instead of specialized, aircraft-specific interfaces, simplifying system components and maintenance.
Active Frequency
VLF
Transmit
Omni
Source Level
High Power
Max Operational Depth
500 m
Features
  • Cylindrical body housing transmit and receive acoustic arrays, as well as telemetry, non acoustic sensors, and associated components
  • Collapsing design provides a low-drag compact form factor for deployment and recovery, but expands for operation to provide large, high-performance acoustic arrays
    • Transmit array deploys vertically below body
    • Receive array staves deploys radially out from body
  • Simplified SU requirements enable a reliable design:
    • SU contains no power storage or amplifier components (replaced with dry end amplifier)
    • Simplified, rugged actuation mechanisms

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]]> Spherical Transducers https://geospectrum.ca/product/spherical-transducers/ Tue, 13 Jun 2023 21:03:18 +0000 https://geospectrum.ca/?post_type=product&p=7485 High-frequency sound source and receiver

GeoSpectrum’s spherical transducers are suitable for a variety of applications, including active/passive sonar, marine mammal detection (MMD), acoustic data transmission, and subsea communications. A spherical transducer may be used with an M620-110 power amplifier if it is intended to be used as a sound source or an M303 transceiver board if it is it is intended to serve as a sound source and a receiver.

GeoSpectrum’s spherical transducers provide an omnidirectional response and come in a variety of sizes ranging from 6″ to 0.5″ in diameter and have resonant frequencies covering a band of 11 kHz–150 kHz. GeoSpectrum’s spherical transducers are effective as both transmitters and receivers.

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Model Number
OD (cm)
Resonance Frequency (Hz)
TVR @ Resonance (dB re μPa/V @ 1 m)
OCV @1 kHz (dB re V/μPa)
Max Depth (m)
Weight (kg)
Capacitance (nF)
Spec Sheet PDF Download
M18C-1.0
2.9
68000
148
-198.5
2500
0.2
10.2
M18C-1.0
M18C-1.5
4.4
44000
148
-195.0
2500
0.3
23.5
M18C-1.5
M18C-2.5
6.7
27000
148
-190.0
2500
0.5
42.5
M18C-2.5
M18C-4.0
10.8
16500
148
-186.5
2500
1.4
57.3
M18C-4.0
M18C-6.0
15.7
12000
148
-185.0
2500
4.8
80
M18C-6.0

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]]> Benders https://geospectrum.ca/product/benders/ Tue, 13 Jun 2023 19:19:22 +0000 https://geospectrum.ca/?post_type=product&p=7480 Low-frequency sound projector

GeoSpectrum’s benders can be used for a variety of different low-frequency applications, including, but not limited to subsea communication, long range data transmission, and active sonar. GeoSpectrum’s ability to customize both individual benders and multi-bender sources gives the M21 product family the ability to meet a wide range of requirements and applications.

GeoSpectrum’s M21 benders, or flexural disk transducers, are highly versatile underwater acoustic projectors that produce moderate power over broadband and high power near resonance. M21’s come in a variety of sizes serving a wide range of resonance frequencies and bandwidths. GeoSpectrum can custom design M21’s to be tailored for each customer’s unique requirements such as resonance frequency, bandwidth, or depth capability.

M21’s are excellent options to be combined into multi-bender sources that are highly customizable to a customer's requirement. M21’s can be used in a Modular Project System (MPS) to produce greater power and bandwidth at even lower frequencies, or in conventional arrays to produce a directive, high-power source.

Individual M21’s can be custom designed to achieve resonance frequencies ranging from 400 Hz to 12 kHz and higher. A selection of standard M21 designs are also available.

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Model Number
Resonance Frequency
(Hz)
Max Depth
(m)
Weight
(kg)
Download PDF
M21-203-500
500
80
3
M21-203-500
M21-203-900
900
190
4
M21-203-900
M21-203-1400
1400
400
5
M21-203-1400
M21-100-2000
2000
270
0.5
M21-100-2000
M21-100-3000
3000
500
1.1
M21-100-3000
M21-070-5000
5000
700
0.6
M21-070-5000

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]]> M670 HMS – Hull-Mounted Sonar https://geospectrum.ca/product/m670-hms-hull-mounted-sonar/ Mon, 05 Jun 2023 16:11:58 +0000 https://geospectrum.ca/?post_type=product&p=7426 The M670 HMS provides surface ships with concurrent, high-performance active and passive sonar capability for the detection, classification, tracking, and localization of underwater targets. It allows the detection of submarines, torpedoes, and mid-water mines and obstacles. Its compact form enables integration in a wide variety of new or upgraded naval vessels. M670 HMS cost-effectiveness makes it a wise and affordable choice for navies seeking a high-performance ASW capability for open-sea as well as littoral environments. Sonar processing is performed by GeoSpectrum’s sensor agnostic RecView system providing flexible waveforms and optimal detection performance and enabling seamless integration with additional ASW systems such as towed array sonar and sonobuoy processor

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The M670 HMS can be readily operated for ASW operations and torpedo and mine detection and alert. As a hull-mounted sonar it does not require launch and recovery operations. The HMS can be operated stand-alone or interfaced to the CMS. It can be augmented by and fully interoperable with a towed array sonar such as GeoSpectrum’s Towed Reelable Active Passive Sonar (TRAPS) enabling bi-static and multi-static operations. M670 HMS can also be part of integrated ASW suite including multiple sonars, Torpedo defense systems, underwater communication and Bathythermograph systems.

Array
40 staves passive receive array
Source Level
Customizable
Active Frequency
LF, MF
Pulse Types
CW, FM, LFM, HFM, COSTAS, Custom
Pulse Length
0.05 to 10 seconds
Passive Processing
Broad Band, Narrow Band, DEMON, Transient
Doppler Processing
+/- 60 Kn
Shock
MIL-STD-901D
Vibration
MIL-STD-167-1
Additional
Eight elements active transmit array
Independent vertical steering of eight transmit channels
Operation by supplier provided operator console or adequate Multi-Function Console
360 degrees operation
Detection Range
Excess of 1st CZ
Features
  • Active & passive submarine detection
  • Active & passive torpedo detection and alert
  • Flexible fixed and operator-defined wave forms for optimal performance
  • Multi-target automatic tracking
  • Classification support
  • Advanced, user-friendly sonar processing and display with built-in analysis tools
  • Integrated situational awareness display on powerful digital map tool
  • Available interfaces to CMS, underwater telephone, acoustic decoy system
  • Extended time-history recall for further contact analysis
  • Data recording and replay
  • Built-in Test (BIT)
  • Sonar performance modeling and estimation
Options
  • Customizable frequency range
  • On-board simulator & trainer
  • Portable Bathythermograph (XBT) system
  • Customizable transducer assembly and dome dimensions
  • Upgrade of existing HMs
  • Integration with towed array sonar
  • Transducer assembly in a sonar dome
  • Power amplifier
  • Sonar rack for management, interface control and sonar processing
  • Operator’s console

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]]> C-Bass https://geospectrum.ca/product/c-bass/ Thu, 20 Apr 2023 17:25:23 +0000 https://geospectrum.ca/?post_type=product&p=7307 GeoSpectrum’s C-BASS transducers are suitable for a wide variety of very low frequency (VLF) applications including use as calibration sources, active sonar acoustic surveillance, acoustic targets for sonar training and acoustic trials, acoustic communication with ranges exceeding 1,000 km, underwater navigation networks, acoustic thermometry, and diver deterrence. C-BASS also provides broadband coherent acoustic mimicry of anthropogenic noise (i.e. offshore wind, construction, pile driving, etc.)

C-BASS is a novel family of very low frequency (VLF) electrodynamic sound projectors. These powerful electrodynamic projectors are less expensive, lighter, smaller, more efficient, and have a broader bandwidth than their peers. C-BASS makes possible applications that were previously impractical.

GeoSpectrum offers a wide range of standard C-BASS configurations with operating frequencies ranging from below 10 Hz up to 3 kHz and maximum source levels that exceed 200 dB re 1 µPa @ 1m. Our finite element analysis and modeling tools and significant build experience enable us to customize C-Bass designs to customer specifications. The omni-directional C-BASS can be used individually or in arrays to produce high-power sources with or without directivity.

C-BASS are offered as stand-alone transducers for customer integration or as a GeoSpectrum-provided system that can include VLF amplifiers, pressure compensation, signal controllers, tow bodies, deployment cables, and winch systems.

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Model Number
Resonance Frequency
(Hz @ 20 m depth)
Maximum source level
(dB re μPa @ 1 m)
Max depth without compensation
(m)
Max depth with standard passive compensation
(m)
Max depth with standard active compensation
(m)
Diameter
(cm)
Mass
(kg)
Spec Sheet PDF Download
M72-25
25
197
N/A
10
230
118
402
M72-25
M72-30
35
201
N/A
10
340
102
355
M72-30
M72-50
53
190
N/A
20
600
68
157
M72-50
M72-110
115
190
30
200
900
35
24
M72-110
M72-300
300
190
80
500
1000
22
9
M72-300

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]]> FFR Free Flooded Rings https://geospectrum.ca/product/ffr-free-flooded-rings/ Thu, 06 Apr 2023 13:33:32 +0000 https://geospectrum.ca/?post_type=product&p=7256 Free Flooded Ring – FFR – transducers are broadband transducers with unlimited depth capability and a toroidal beam pattern. They are often used as an acoustic source in high-power applications and those requiring full ocean depth.

GeoSpectrum offers a wide range of FFR transducers and FFR based sources with operating frequencies ranging from 500 Hz to 20 kHz and source levels from 190 to 220 dB re 1 µPa @ 1m. Our finite element analysis and modeling tools and significant build experience enable to us to customize FFR designs to customer specifications. Depending on the application and requirements, Geospectrum can use radially poled and circumferentially poled (segmented) construction methods to produce FFR’s to precisely meet users’ needs with potential savings in cost and weight.

Using FFR technology to produce a standard range of communications transducers with a hemispherical beam pattern, the transducers are ideal for use in a range of underwater communications and acoustic modem applications. As well as producing models tuned to suit popular modem systems, we are able to offer drop-in replacement for transducer models of other companies that may no longer be available on the market.

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Model Number
Resonance frequency
TVR at resonance
Maximum SPL at resonance
Diameter / max section width
Height
Spec Sheet PDF Download
M27-450
4250 Hz
138 dB re 1 μPa/V @ 1 m
193 dB re 1 μPa @ 1m
18.4 cm
16.1 cm
M27-450
M27-550
530 Hz
135 dB re 1 μPa/V @ 1 m
191 dB re 1 μPa @ 1m
24.1 cm
82.5 cm
M27-550
M27-650
3050 Hz
137 dB re 1 μPa/V @ 1 m
193 dB re 1 μPa @ 1m
20.8 cm
20.8 cm
M27-650
M27-850
1850 Hz
138 dB re 1 μPa/V @ 1 m
194 dB re 1 μPa @ 1m
25 cm
24 cm
M27-850
M27-890
990 Hz
135 dB re 1 μPa/V @ 1 m
191 dB re 1 μPa @ 1m
32 cm
53 cm
M27-890

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]]> M660 HMS – Hull-Mounted Sonar https://geospectrum.ca/product/m660-hms-hull-mounted-sonar/ Fri, 17 Feb 2023 15:03:18 +0000 https://geospectrum.ca/?post_type=product&p=7072 The M660 HMS is a high-powered, active/passive, long range ASW sonar for in-service and future naval vessels. Completely custom built to meet your requirements, our system maintains the ability to be customized for multi roles after installation with simple software updates. This flexibility keeps this sonar on the cutting edge as compared to other options on the market.

Our M660 has a customizable transmission frequency range and the ability to electronically conduct both vertical and horizontal beam steering. Not only does this provide the capability to detect submarines, but the sonar's high frequency and beam steering ability also provides the capability and fidelity to detect moored mines. A full-sized and compact version (pictured) of the M660 are currently available.

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The M660 can be used standalone, interfaced to a CMS, or act as part of a full multi-agent underwater suite including towed source and array, sonobuoy, torpedo defence and multistatic.

Array
36 Vertical staves x 10 transducers (full size), 36 Vertical staves x 6 transducers (compact), or customizable
Source Level
Customizable
Active Frequency
LF, MF
Pulse Types
CW, FM, HFM, CUSTOM
Detection Range
Excess of 1st CZ
Features
  • Advanced user-friendly sonar processing and display with built-in analysis tools
  • Very long range detection for submarines and surface ships in any environment
  • Real-time detection, classification, and localization
  • Multi-target tracking; multi-static capability
  • Advanced user-friendly sonar processing and display with built-in analysis tools
  • Active and passive torpedo detection
  • Adaptable form factor can be retrofit into existing HMS facilities
  • Hardware and software interfaces to underwater telephone systems
Options
  • Customizable frequency range
  • Customizable transducer size
  • Sonar Processing Software
  • Amplifiers
  • Transducers

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